They all should be made by NC machine, even in mainland China they can't
affort to hand made them and sell at such low price. The lens adapters I
have are very accurate (from sample to sample), of course it is possible
that some cheaper manufacturer just don't control it very well in the
process or the design is weaker. 5mm movement is too much, the lens lock
simply does not fit in.
The major problem of these EOS adapter is there is no steel spring in use
like the original OM lens adapter. The brass is too soft, if you mount heavy
lenses, after playing it for some time the three "springs" will be flatten
out and the friction is reduced, worse cases there will be a gap between the
lens and adapter but there should be no play if the lens lock works.
This image shown the construction of the original OM mount:
http://www.accura.com.hk/temp/IMG_8106.JPG
This image shown the Chinese adapter, note the lens lock see if this is the
problem for lens rotation:
http://www.accura.com.hk/temp/IMG_8107.JPG
C.H.Ling
----- Original Message -----
From: "Chuck Norcutt"
> No, not normal. The lens to adapter fit should be as good as the
> original lens to camera body fit. I think many of these cheap Chinese
> adapters are made by hand in small shops with nothing but a lathe...
> with the consequence of considerable quality variation from sample to
> sample. If they were produced with numerical control equipment they
> should all be close to perfect.
>
> Chuck Norcutt
>
>
> SwissPace wrote:
>> One of my christmas presents from my wife was the permission to buy a
>> new digital back for my lenses, I had already ordered an adapter from
>> ebay seller happypagehk as suggested and it has the new chip and AF
>> confirmation works however there is quite a bit if play between the lens
>> and the mount. The mount to body fit is snug. Is this play normal the
>> lens rotates back and forth about 5mm when focusing and if I push the
>> lens to one side I can see a small(tiny) gap between the lens and
>> adapter.
>>
>> As for the new camera I have as yet had little time to play with it
>> properly but the video feature is nice I don't think it will replace the
>> E-3 but rather compliment it - we will see
>>
>> IanW
--
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